For thousands of years, the ancient race of Yolns has been parasitizing people. Yolnas move from one human body to another, killing their carriers in the process. People hate Yolns, but do all of them deserve hatred?.. A resident of St. Petersburg, Anton Samarin, has lost his wife. Two years later, her body was discovered in Magadan, but why does the deceased, who is not even thirty, look like she lived a long, stormy life? And why, before her death, was she next to a woman who is now also wanted? Anton does not believe the arguments of the investigator and operatives, he is ready to conduct an independent investigation, and one day a bell rings in his apartment...